I took my 8320 dock apart and put some scotch tape over the LED, then covered it in a sharpie... It cut enough light out that it was just a dim glow at night and wasn't offensive anymore.

I wonder if there is any prayer of getting the 8900 to work in the 8320 cradle at all? If the 8900 fit in there you might be able to add some padding, but if it is a tight fit, then it'd be dremel time and at that point I'll buy a different base...

1. I don't know who said it doesn't have a light. It does have a light. Not as powerful as the 8300 dock but it does in fact have a light. the 4th picture clearly shows the light.

It has a light on the back to guide you when you plug your phone in in the dark, but not as RIM has advertised that it has a 2-stage LED light that indicates new messages, etc. That light is not visible once the unit is plugged in hence my earlier comment about no light.